Nguyen, T. H. and Nguyen, T. T. T. (2019) “International Labor Migration: Employment, Costs and Income of Export Labors in Yen Khe commune, Thanh Ba district, Phu Tho province, Vietnam”, International Journal of Social Sciences and Humanities Invention, 6(11), pp. 5731–5738. doi: 10.18535/ijsshi/v6i11.08.